I will say the plum wood worked great. Wasn't sure if it would or not as it was just some rogue tree in my parents neighbor's yard that a large branch fell off of into my parents yard. Little yellow sweet fruits all over it.

Now I need to go back to my parents and get the rest of it as I used about 1/2 of what I took on this smoke.

As far as using all wood - smoke ring and bark was a lot better in this then when using my MINI WSM with charcoal and a few wood chunks. Smoke flavor wasn't that much stronger. Amount of babysitting is through the roof more than with the mini.